diff --git a/src/window.c b/src/window.c
index 0c0fb30..fa0cc90 100644
--- a/src/window.c
+++ b/src/window.c
@@ -3323,7 +3323,7 @@
 
 #ifdef FEAT_GUI_TABLINE
     if (gui_use_tabline())
-	gui_mch_set_curtab(tabpage_index(tp));
+	gui_mch_set_curtab(tabpage_index(curtab));
 #endif
 }